Malicious PDF — malware analysis report

Static analysis result for SHA-256 241973ead6167cec…

MALICIOUS

PDF

46.5 KB Created: 2021-05-11 19:00:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: a0481e01572c07589516d9a9ac884257 SHA-1: 49a3dcbf78fc78ad61b5940d173bdc1d716f3d58 SHA-256: 241973ead6167cec4fddc130008e2c470b17e8c0678b8af5a8bdff92741392c1
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a heuristic firing for a malicious redirector link pointing to 'netcdn.xyz'. The document body also explicitly contains the malicious URL and a call-to-action phrase, reinforcing the lure. While no scripts were extracted, the presence of a malicious redirector strongly suggests the intent is to deliver a second-stage payload or phish credentials.

Machine Learning

  • Nyx PDF Classifier clean score 0.0143

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/robloxhero.xyz-free-robux-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000367f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x367F 37328 bytes
SHA-256: 5a337e78fb821f9e7b639b86a12f9a7f603288a1766cc293f2db1e731a3d2b5f
font_01_sfnt_off00008a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A71 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9423 18584 bytes
SHA-256: d96645d743d7bc7e16305d404e9ae036d13b2ec1544ce4a3e073a2af54c3cd1e

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